Rozwiąż równanie:
d) 6⅛y=1
e) -2,2 + x=6,1
f) -⅓y=10
g) 8a+4=36
h) 8/9k+⅓=3
i) 6b-3=-9
j) -¾ -¼l=2,25
k) -2,5c-8=17
l) 0,4m-2= -6
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d)
6⅛y=1
19/3y = 1
y = 1 : 19/3
y = 1 * 3/19
y = 3/19
e)
-2,2 + x=6,1
x = 6,1 - (-2,2)
x = 6,1 + 2,2
x = 8,3
f)
-⅓y=10
y = 10 : (-1/3)
y = 10 * (-3/1)
y = -30
g)
8a+4=36
8a = 36 - 4
8a = 32
a = 32 : 8
a = 4
h)
8/9k+⅓=3
8/9k = 3 - 1/3
8/9k = 2 i 2/3
k = 8/3 : 8/9
k = 8/3 * 9/8
k =3
i)
6b-3=-9
6b = -9 + 3
6b = -6
b = -6 : 6
b = -1
j)
-¾ -¼l=2,25
-1/4l = 2,25 - (-0,75)
-1/4l = 2,25 + 0,75
-1/4l = 3
l = 3 : (-1/4)
l = 3 * (-4/1)
l = - 12
k)
-2,5c-8=17
-2,5c = 17 + 8
-2,5c = 25
c = 25 : (-2,5)
c = 250 : (-25)
c = -10
l)
0,4m-2= -6
0,4m = -6 + 2
0,4m = -4
m = -4 : 0,4
m = -40 : 4
m = -10